Annotation of gforth/cross.fs, revision 1.42
1.1 anton 1: \ CROSS.FS The Cross-Compiler 06oct92py
2: \ Idea and implementation: Bernd Paysan (py)
1.30 anton 3:
4: \ Copyright (C) 1995 Free Software Foundation, Inc.
5:
6: \ This file is part of Gforth.
7:
8: \ Gforth is free software; you can redistribute it and/or
9: \ modify it under the terms of the GNU General Public License
10: \ as published by the Free Software Foundation; either version 2
11: \ of the License, or (at your option) any later version.
12:
13: \ This program is distributed in the hope that it will be useful,
14: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
15: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16: \ GNU General Public License for more details.
17:
18: \ You should have received a copy of the GNU General Public License
19: \ along with this program; if not, write to the Free Software
20: \ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
1.1 anton 21:
22: \ Log:
23: \ changed in ; [ to state off 12may93jaw
24: \ included place +place 12may93jaw
25: \ for a created word (variable, constant...)
26: \ is now an alias in the target voabulary.
27: \ this means it is no longer necessary to
28: \ switch between vocabularies for variable
29: \ initialization 12may93jaw
30: \ discovered error in DOES>
31: \ replaced !does with (;code) 16may93jaw
32: \ made complete redesign and
33: \ introduced two vocs method
34: \ to be asure that the right words
35: \ are found 08jun93jaw
36: \ btw: ! works not with 16 bit
37: \ targets 09jun93jaw
38: \ added: 2user and value 11jun93jaw
39:
1.9 pazsan 40: \ include other.fs \ ansforth extentions for cross
1.1 anton 41:
1.23 pazsan 42: : string, ( c-addr u -- )
43: \ puts down string as cstring
44: dup c, here swap chars dup allot move ;
45: ' falign Alias cfalign
1.5 pazsan 46: : comment? ( c-addr u -- c-addr u )
47: 2dup s" (" compare 0=
48: IF postpone (
49: ELSE 2dup s" \" compare 0= IF postpone \ THEN
50: THEN ;
51:
1.1 anton 52: decimal
53:
54: \ Begin CROSS COMPILER:
55:
56: \ GhostNames 9may93jaw
57: \ second name source to search trough list
58:
59: VARIABLE GhostNames
60: 0 GhostNames !
61: : GhostName ( -- addr )
1.22 anton 62: here GhostNames @ , GhostNames ! here 0 ,
63: bl word count
64: \ 2dup type space
65: string, cfalign ;
1.1 anton 66:
67: hex
68:
69:
70: Vocabulary Cross
71: Vocabulary Target
72: Vocabulary Ghosts
73: VOCABULARY Minimal
74: only Forth also Target also also
75: definitions Forth
76:
77: : T previous Cross also Target ; immediate
78: : G Ghosts ; immediate
79: : H previous Forth also Cross ; immediate
80:
81: forth definitions
82:
83: : T previous Cross also Target ; immediate
84: : G Ghosts ; immediate
85:
86: : >cross also Cross definitions previous ;
87: : >target also Target definitions previous ;
88: : >minimal also Minimal definitions previous ;
89:
90: H
91:
92: >CROSS
93:
94: \ Variables 06oct92py
95:
96: -1 Constant NIL
97: Variable image
98: Variable tlast NIL tlast ! \ Last name field
99: Variable tlastcfa \ Last code field
100: Variable tdoes \ Resolve does> calls
101: Variable bit$
102: Variable tdp
103: : there tdp @ ;
104:
105: \ Parameter for target systems 06oct92py
106:
1.42 ! pazsan 107: mach-file count included
1.1 anton 108:
1.19 pazsan 109: \ Create additional parameters 19jan95py
110:
111: T
112: cell Constant tcell
113: cell<< Constant tcell<<
114: cell>bit Constant tcell>bit
115: bits/byte Constant tbits/byte
116: float Constant tfloat
117: 1 bits/byte lshift Constant maxbyte
118: H
119:
1.1 anton 120: >TARGET
121:
122: \ Byte ordering and cell size 06oct92py
123:
1.19 pazsan 124: : cell+ tcell + ;
125: : cells tcell<< lshift ;
1.1 anton 126: : chars ;
1.19 pazsan 127: : floats tfloat * ;
1.6 anton 128:
1.1 anton 129: >CROSS
1.19 pazsan 130: : cell/ tcell<< rshift ;
1.1 anton 131: >TARGET
132: 20 CONSTANT bl
133: -1 Constant NIL
134:
135: >CROSS
136:
1.20 pazsan 137: bigendian
138: [IF]
139: : T! ( n addr -- ) >r s>d r> tcell bounds swap 1-
140: DO maxbyte ud/mod rot I c! -1 +LOOP 2drop ;
141: : T@ ( addr -- n ) >r 0 0 r> tcell bounds
142: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap LOOP d>s ;
1.19 pazsan 143: [ELSE]
1.20 pazsan 144: : T! ( n addr -- ) >r s>d r> tcell bounds
145: DO maxbyte ud/mod rot I c! LOOP 2drop ;
146: : T@ ( addr -- n ) >r 0 0 r> tcell bounds swap 1-
147: DO maxbyte * swap maxbyte um* rot + swap I c@ + swap -1 +LOOP d>s ;
1.1 anton 148: [THEN]
149:
150: \ Memory initialisation 05dec92py
151: \ Fixed bug in else part 11may93jaw
152:
153: [IFDEF] Memory \ Memory is a bigFORTH feature
1.5 pazsan 154: also Memory
1.1 anton 155: : initmem ( var len -- )
156: 2dup swap handle! >r @ r> erase ;
1.5 pazsan 157: toss
1.1 anton 158: [ELSE]
159: : initmem ( var len -- )
160: tuck allocate abort" CROSS: No memory for target"
161: ( len var adr ) dup rot !
162: ( len adr ) swap erase ;
163: [THEN]
164:
165: \ MakeKernal 12dec92py
166:
167: >MINIMAL
1.39 pazsan 168: : makekernel ( targetsize -- targetsize )
1.1 anton 169: bit$ over 1- cell>bit rshift 1+ initmem
170: image over initmem tdp off ;
171:
172: >CROSS
173: \ Bit string manipulation 06oct92py
174: \ 9may93jaw
175: CREATE Bittable 80 c, 40 c, 20 c, 10 c, 8 c, 4 c, 2 c, 1 c,
176: : bits ( n -- n ) chars Bittable + c@ ;
177:
178: : >bit ( addr n -- c-addr mask ) 8 /mod rot + swap bits ;
179: : +bit ( addr n -- ) >bit over c@ or swap c! ;
1.4 pazsan 180: : -bit ( addr n -- ) >bit invert over c@ and swap c! ;
1.1 anton 181: : relon ( taddr -- ) bit$ @ swap cell/ +bit ;
1.4 pazsan 182: : reloff ( taddr -- ) bit$ @ swap cell/ -bit ;
1.1 anton 183:
184: \ Target memory access 06oct92py
185:
186: : align+ ( taddr -- rest )
187: cell tuck 1- and - [ cell 1- ] Literal and ;
1.22 anton 188: : cfalign+ ( taddr -- rest )
1.39 pazsan 189: \ see kernel.fs:cfaligned
1.22 anton 190: float tuck 1- and - [ float 1- ] Literal and ;
1.1 anton 191:
192: >TARGET
193: : aligned ( taddr -- ta-addr ) dup align+ + ;
194: \ assumes cell alignment granularity (as GNU C)
195:
1.22 anton 196: : cfaligned ( taddr1 -- taddr2 )
1.39 pazsan 197: \ see kernel.fs
1.22 anton 198: dup cfalign+ + ;
199:
1.1 anton 200: >CROSS
201: : >image ( taddr -- absaddr ) image @ + ;
202: >TARGET
1.19 pazsan 203: : @ ( taddr -- w ) >image t@ ;
204: : ! ( w taddr -- ) >image t! ;
1.1 anton 205: : c@ ( taddr -- char ) >image c@ ;
206: : c! ( char taddr -- ) >image c! ;
1.7 anton 207: : 2@ ( taddr -- x1 x2 ) T dup cell+ @ swap @ H ;
208: : 2! ( x1 x2 taddr -- ) T swap over ! cell+ ! H ;
1.1 anton 209:
210: \ Target compilation primitives 06oct92py
211: \ included A! 16may93jaw
212:
213: : here ( -- there ) there ;
214: : allot ( n -- ) tdp +! ;
215: : , ( w -- ) T here H cell T allot ! H ;
216: : c, ( char -- ) T here 1 allot c! H ;
217: : align ( -- ) T here H align+ 0 ?DO bl T c, H LOOP ;
1.22 anton 218: : cfalign ( -- )
219: T here H cfalign+ 0 ?DO bl T c, H LOOP ;
1.1 anton 220:
221: : A! dup relon T ! H ;
222: : A, ( w -- ) T here H relon T , H ;
223:
224: >CROSS
225:
226: \ threading modell 13dec92py
227:
228: >TARGET
229: : >body ( cfa -- pfa ) T cell+ cell+ H ;
230: >CROSS
231:
232: \ Ghost Builder 06oct92py
233:
234: \ <T T> new version with temp variable 10may93jaw
235:
236: VARIABLE VocTemp
237:
238: : <T get-current VocTemp ! also Ghosts definitions ;
239: : T> previous VocTemp @ set-current ;
240:
241: 4711 Constant <fwd> 4712 Constant <res>
1.42 ! pazsan 242: 4713 Constant <imm> 4714 Constant <do:>
1.1 anton 243:
244: \ iForth makes only immediate directly after create
245: \ make atonce trick! ?
246:
247: Variable atonce atonce off
248:
249: : NoExec true ABORT" CROSS: Don't execute ghost" ;
250:
251: : GhostHeader <fwd> , 0 , ['] NoExec , ;
252:
253: : >magic ; : >link cell+ ; : >exec cell+ cell+ ;
254: : >end 3 cells + ;
255:
1.11 pazsan 256: Variable last-ghost
1.1 anton 257: : Make-Ghost ( "name" -- ghost )
258: >in @ GhostName swap >in !
259: <T Create atonce @ IF immediate atonce off THEN
260: here tuck swap ! ghostheader T>
1.11 pazsan 261: DOES> dup last-ghost ! >exec @ execute ;
1.1 anton 262:
263: \ ghost words 14oct92py
264: \ changed: 10may93py/jaw
265:
266: : gfind ( string -- ghost true/1 / string false )
267: \ searches for string in word-list ghosts
1.5 pazsan 268: dup count [ ' ghosts >body ] ALiteral search-wordlist
1.38 anton 269: dup IF >r >body nip r> THEN ;
1.1 anton 270:
271: VARIABLE Already
272:
273: : ghost ( "name" -- ghost )
274: Already off
1.13 pazsan 275: >in @ bl word gfind IF Already on nip EXIT THEN
1.1 anton 276: drop >in ! Make-Ghost ;
277:
278: \ resolve 14oct92py
279:
280: : resolve-loop ( ghost tcfa -- ghost tcfa )
281: >r dup >link @
282: BEGIN dup WHILE dup T @ H r@ rot T ! H REPEAT drop r> ;
283:
284: \ exists 9may93jaw
285:
286: : exists ( ghost tcfa -- )
287: over GhostNames
288: BEGIN @ dup
289: WHILE 2dup cell+ @ =
290: UNTIL
1.18 pazsan 291: 2 cells + count cr ." CROSS: Exists: " type 4 spaces drop
1.1 anton 292: swap cell+ !
1.24 pazsan 293: ELSE true abort" CROSS: Ghostnames inconsistent "
1.1 anton 294: THEN ;
295:
296: : resolve ( ghost tcfa -- )
297: over >magic @ <fwd> <> IF exists EXIT THEN
298: resolve-loop over >link ! <res> swap >magic ! ;
299:
300: \ gexecute ghost, 01nov92py
301:
302: : do-forward ( ghost -- )
303: >link dup @ there rot ! T A, H ;
304: : do-resolve ( ghost -- )
305: >link @ T A, H ;
306:
307: : gexecute ( ghost -- ) dup @
308: <fwd> = IF do-forward ELSE do-resolve THEN ;
309: : ghost, ghost gexecute ;
310:
311: \ .unresolved 11may93jaw
312:
313: variable ResolveFlag
314:
315: \ ?touched 11may93jaw
316:
317: : ?touched ( ghost -- flag ) dup >magic @ <fwd> = swap >link @
318: 0 <> and ;
319:
320: : ?resolved ( ghostname -- )
321: dup cell+ @ ?touched
322: IF cell+ cell+ count cr type ResolveFlag on ELSE drop THEN ;
323:
324: >MINIMAL
325: : .unresolved ( -- )
326: ResolveFlag off cr ." Unresolved: "
327: Ghostnames
328: BEGIN @ dup
329: WHILE dup ?resolved
1.10 anton 330: REPEAT drop ResolveFlag @
331: IF
1.11 pazsan 332: abort" Unresolved words!"
1.10 anton 333: ELSE
334: ." Nothing!"
335: THEN
336: cr ;
1.1 anton 337:
338: >CROSS
339: \ Header states 12dec92py
340:
341: : flag! ( 8b -- ) tlast @ dup >r T c@ xor r> c! H ;
342:
343: VARIABLE ^imm
344:
345: >TARGET
1.36 anton 346: : immediate 40 flag!
1.18 pazsan 347: ^imm @ @ dup <imm> = IF drop EXIT THEN
1.1 anton 348: <res> <> ABORT" CROSS: Cannot immediate a unresolved word"
349: <imm> ^imm @ ! ;
1.36 anton 350: : restrict 20 flag! ;
1.1 anton 351: >CROSS
352:
353: \ ALIAS2 ansforth conform alias 9may93jaw
354:
355: : ALIAS2 create here 0 , DOES> @ execute ;
356: \ usage:
1.18 pazsan 357: \ ' <name> alias2 bla !
1.1 anton 358:
359: \ Target Header Creation 01nov92py
360:
361: : string, ( addr count -- )
1.28 pazsan 362: dup T c, H bounds ?DO I c@ T c, H LOOP ;
1.22 anton 363: : name, ( "name" -- ) bl word count string, T cfalign H ;
1.1 anton 364: : view, ( -- ) ( dummy ) ;
365:
1.25 pazsan 366: \ Target Document Creation (goes to crossdoc.fd) 05jul95py
367:
368: s" crossdoc.fd" r/w create-file throw value doc-file-id
369: \ contains the file-id of the documentation file
370:
1.40 pazsan 371: : T-\G ( -- )
1.25 pazsan 372: source >in @ /string doc-file-id write-line throw
1.40 pazsan 373: postpone \ ;
1.25 pazsan 374:
1.39 pazsan 375: Variable to-doc to-doc on
1.25 pazsan 376:
377: : cross-doc-entry ( -- )
378: to-doc @ tlast @ 0<> and \ not an anonymous (i.e. noname) header
379: IF
380: s" " doc-file-id write-line throw
381: s" make-doc " doc-file-id write-file throw
382: tlast @ >image count $1F and doc-file-id write-file throw
383: >in @
384: [char] ( parse 2drop
385: [char] ) parse doc-file-id write-file throw
386: s" )" doc-file-id write-file throw
387: [char] \ parse 2drop
1.40 pazsan 388: T-\G
1.25 pazsan 389: >in !
1.39 pazsan 390: THEN ;
1.25 pazsan 391:
1.28 pazsan 392: \ Target TAGS creation
393:
1.39 pazsan 394: s" kernel.TAGS" r/w create-file throw value tag-file-id
1.28 pazsan 395: \ contains the file-id of the tags file
396:
397: Create tag-beg 2 c, 7F c, bl c,
398: Create tag-end 2 c, bl c, 01 c,
399: Create tag-bof 1 c, 0C c,
400:
401: 2variable last-loadfilename 0 0 last-loadfilename 2!
402:
403: : put-load-file-name ( -- )
404: loadfilename 2@ last-loadfilename 2@ d<>
405: IF
406: tag-bof count tag-file-id write-line throw
1.31 anton 407: sourcefilename 2dup
1.28 pazsan 408: tag-file-id write-file throw
409: last-loadfilename 2!
410: s" ,0" tag-file-id write-line throw
411: THEN ;
412:
413: : cross-tag-entry ( -- )
414: tlast @ 0<> \ not an anonymous (i.e. noname) header
415: IF
416: put-load-file-name
417: source >in @ min tag-file-id write-file throw
418: tag-beg count tag-file-id write-file throw
419: tlast @ >image count $1F and tag-file-id write-file throw
420: tag-end count tag-file-id write-file throw
1.31 anton 421: base @ decimal sourceline# 0 <# #s #> tag-file-id write-file throw
1.28 pazsan 422: \ >in @ 0 <# #s [char] , hold #> tag-file-id write-line throw
423: s" ,0" tag-file-id write-line throw
424: base !
425: THEN ;
426:
427: \ Target header creation
428:
1.1 anton 429: VARIABLE CreateFlag CreateFlag off
430:
431: : (Theader ( "name" -- ghost ) T align H view,
432: tlast @ dup 0> IF T 1 cells - THEN A, H there tlast !
433: >in @ name, >in ! T here H tlastcfa !
434: CreateFlag @ IF
1.18 pazsan 435: >in @ alias2 swap >in ! \ create alias in target
436: >in @ ghost swap >in !
437: swap also ghosts ' previous swap ! \ tick ghost and store in alias
438: CreateFlag off
1.1 anton 439: ELSE ghost THEN
440: dup >magic ^imm ! \ a pointer for immediate
441: Already @ IF dup >end tdoes !
442: ELSE 0 tdoes ! THEN
1.25 pazsan 443: 80 flag!
1.28 pazsan 444: cross-doc-entry cross-tag-entry ;
1.1 anton 445:
446: VARIABLE ;Resolve 1 cells allot
447:
1.11 pazsan 448: : Theader ( "name" -- ghost )
449: (THeader dup there resolve 0 ;Resolve ! ;
1.1 anton 450:
451: >TARGET
452: : Alias ( cfa -- ) \ name
453: (THeader over resolve T A, H 80 flag! ;
1.42 ! pazsan 454: : Alias: ( cfa -- ) \ name
! 455: ghost tuck swap resolve <do:> swap >magic ! ;
1.1 anton 456: >CROSS
457:
458: \ Conditionals and Comments 11may93jaw
459:
460: : ;Cond
461: postpone ;
462: swap ! ; immediate
463:
464: : Cond: ( -- ) \ name {code } ;
465: atonce on
466: ghost
467: >exec
468: :NONAME ;
469:
470: : restrict? ( -- )
471: \ aborts on interprete state - ae
472: state @ 0= ABORT" CROSS: Restricted" ;
473:
474: : Comment ( -- )
475: >in @ atonce on ghost swap >in ! ' swap >exec ! ;
476:
477: Comment ( Comment \
478:
479: \ Predefined ghosts 12dec92py
480:
481: ghost 0= drop
482: ghost branch ghost ?branch 2drop
483: ghost (do) ghost (?do) 2drop
484: ghost (for) drop
485: ghost (loop) ghost (+loop) 2drop
486: ghost (next) drop
1.2 pazsan 487: ghost unloop ghost ;S 2drop
1.1 anton 488: ghost lit ghost (compile) ghost ! 2drop drop
1.29 anton 489: ghost (does>) ghost noop 2drop
1.1 anton 490: ghost (.") ghost (S") ghost (ABORT") 2drop drop
1.41 pazsan 491: ghost ' drop
1.42 ! pazsan 492: ghost :docol ghost :doesjump ghost :dodoes 2drop drop
1.1 anton 493:
494: \ compile 10may93jaw
495:
496: : compile ( -- ) \ name
497: restrict?
1.13 pazsan 498: bl word gfind dup 0= ABORT" CROSS: Can't compile "
1.1 anton 499: 0> ( immediate? )
500: IF >exec @ compile,
501: ELSE postpone literal postpone gexecute THEN ;
502: immediate
503:
1.42 ! pazsan 504: \ generic threading modell
! 505: : docol, ( -- ) compile :docol T 0 , H ;
! 506:
! 507: : dodoes, ( -- ) compile :doesjump T 0 , H ;
! 508:
1.1 anton 509: >TARGET
1.13 pazsan 510: : ' ( -- cfa ) bl word gfind 0= ABORT" CROSS: undefined "
1.1 anton 511: dup >magic @ <fwd> = ABORT" CROSS: forward " >link @ ;
512:
513: Cond: ['] compile lit ghost gexecute ;Cond
1.14 anton 514:
515: Cond: chars ;Cond
1.1 anton 516:
517: >CROSS
518: \ tLiteral 12dec92py
519:
520: : lit, ( n -- ) compile lit T , H ;
521: : alit, ( n -- ) compile lit T A, H ;
522:
523: >TARGET
1.40 pazsan 524: Cond: \G T-\G ;Cond
525:
1.1 anton 526: Cond: Literal ( n -- ) restrict? lit, ;Cond
527: Cond: ALiteral ( n -- ) restrict? alit, ;Cond
528:
529: : Char ( "<char>" -- ) bl word char+ c@ ;
530: Cond: [Char] ( "<char>" -- ) restrict? Char lit, ;Cond
531:
532: >CROSS
533: \ Target compiling loop 12dec92py
534: \ ">tib trick thrown out 10may93jaw
535: \ number? defined at the top 11may93jaw
536:
537: \ compiled word might leave items on stack!
538: : tcom ( in name -- )
539: gfind ?dup IF 0> IF nip >exec @ execute
540: ELSE nip gexecute THEN EXIT THEN
541: number? dup IF 0> IF swap lit, THEN lit, drop
542: ELSE 2drop >in !
543: ghost gexecute THEN ;
544:
545: >TARGET
546: \ : ; DOES> 13dec92py
547: \ ] 9may93py/jaw
548:
549: : ] state on
550: BEGIN
1.13 pazsan 551: BEGIN >in @ bl word
1.1 anton 552: dup c@ 0= WHILE 2drop refill 0=
553: ABORT" CROSS: End of file while target compiling"
554: REPEAT
555: tcom
556: state @
557: 0=
558: UNTIL ;
559:
560: \ by the way: defining a second interpreter (a compiler-)loop
561: \ is not allowed if a system should be ans conform
562:
563: : : ( -- colon-sys ) \ Name
564: (THeader ;Resolve ! there ;Resolve cell+ !
565: docol, depth T ] H ;
566:
1.37 pazsan 567: : :noname ( -- colon-sys )
568: T align H there docol, depth T ] H ;
569:
1.2 pazsan 570: Cond: EXIT ( -- ) restrict? compile ;S ;Cond
1.6 anton 571:
572: Cond: ?EXIT ( -- ) 1 abort" CROSS: using ?exit" ;Cond
1.2 pazsan 573:
1.1 anton 574: Cond: ; ( -- ) restrict?
575: depth ?dup IF 1- <> ABORT" CROSS: Stack changed"
576: ELSE true ABORT" CROSS: Stack empty" THEN
1.2 pazsan 577: compile ;S state off
1.1 anton 578: ;Resolve @
579: IF ;Resolve @ ;Resolve cell+ @ resolve THEN
580: ;Cond
581: Cond: [ restrict? state off ;Cond
582:
583: >CROSS
1.42 ! pazsan 584: : !does
! 585: tlastcfa @ dup there >r tdp ! compile :dodoes r> tdp ! T cell+ ! H ;
1.1 anton 586:
587: >TARGET
588: Cond: DOES> restrict?
1.29 anton 589: compile (does>) dodoes, tdoes @ ?dup IF @ T here H resolve THEN
1.1 anton 590: ;Cond
591: : DOES> dodoes, T here H !does depth T ] H ;
592:
593: >CROSS
594: \ Creation 01nov92py
595:
596: \ Builder 11may93jaw
597:
598: : Builder ( Create do: "name" -- )
599: >in @ alias2 swap dup >in ! >r >r
600: Make-Ghost rot swap >exec ! ,
601: r> r> >in !
1.11 pazsan 602: also ghosts ' previous swap ! ;
603: \ DOES> dup >exec @ execute ;
1.1 anton 604:
605: : gdoes, ( ghost -- ) >end @ dup >magic @ <fwd> <>
1.42 ! pazsan 606: IF
! 607: dup >magic @ <do:> =
! 608: IF gexecute T 0 , H EXIT THEN
! 609: THEN
! 610: compile :dodoes gexecute T here H cell - reloff ;
1.1 anton 611:
1.11 pazsan 612: : TCreate ( -- )
613: last-ghost @
1.1 anton 614: CreateFlag on
1.11 pazsan 615: Theader >r dup gdoes,
616: >end @ >exec @ r> >exec ! ;
1.1 anton 617:
618: : Build: ( -- [xt] [colon-sys] )
619: :noname postpone TCreate ;
620:
621: : gdoes> ( ghost -- addr flag )
1.11 pazsan 622: last-ghost @
1.1 anton 623: state @ IF gexecute true EXIT THEN
624: cell+ @ T >body H false ;
625:
626: \ DO: ;DO 11may93jaw
627: \ changed to ?EXIT 10may93jaw
628:
629: : DO: ( -- addr [xt] [colon-sys] )
630: here ghostheader
1.11 pazsan 631: :noname postpone gdoes> postpone ?EXIT ;
1.1 anton 632:
1.42 ! pazsan 633: : by: ( -- addr [xt] [colon-sys] ) \ name
! 634: ghost
! 635: :noname postpone gdoes> postpone ?EXIT ;
! 636:
1.1 anton 637: : ;DO ( addr [xt] [colon-sys] -- )
638: postpone ; ( S addr xt )
639: over >exec ! ; immediate
640:
641: : by ( -- addr ) \ Name
642: ghost >end @ ;
643:
644: >TARGET
645: \ Variables and Constants 05dec92py
646:
647: Build: ;
1.42 ! pazsan 648: by: :dovar ( ghost -- addr ) ;DO
1.1 anton 649: Builder Create
650:
651: Build: T 0 , H ;
652: by Create
653: Builder Variable
654:
655: Build: T 0 A, H ;
656: by Create
657: Builder AVariable
658:
1.3 pazsan 659: \ User variables 04may94py
660:
661: >CROSS
662: Variable tup 0 tup !
663: Variable tudp 0 tudp !
664: : u, ( n -- udp )
665: tup @ tudp @ + T ! H
1.19 pazsan 666: tudp @ dup T cell+ H tudp ! ;
1.3 pazsan 667: : au, ( n -- udp )
668: tup @ tudp @ + T A! H
1.19 pazsan 669: tudp @ dup T cell+ H tudp ! ;
1.3 pazsan 670: >TARGET
671:
672: Build: T 0 u, , H ;
1.42 ! pazsan 673: by: :douser ( ghost -- up-addr ) T @ H tup @ + ;DO
1.1 anton 674: Builder User
675:
1.3 pazsan 676: Build: T 0 u, , 0 u, drop H ;
677: by User
1.1 anton 678: Builder 2User
679:
1.3 pazsan 680: Build: T 0 au, , H ;
681: by User
1.1 anton 682: Builder AUser
683:
684: Build: ( n -- ) T , H ;
1.42 ! pazsan 685: by: :docon ( ghost -- n ) T @ H ;DO
1.1 anton 686: Builder Constant
687:
688: Build: ( n -- ) T A, H ;
689: by Constant
690: Builder AConstant
691:
1.24 pazsan 692: Build: ( d -- ) T , , H ;
693: DO: ( ghost -- d ) T dup cell+ @ swap @ H ;DO
694: Builder 2Constant
695:
1.1 anton 696: Build: T 0 , H ;
697: by Constant
698: Builder Value
699:
1.32 pazsan 700: Build: T 0 A, H ;
701: by Constant
702: Builder AValue
703:
1.1 anton 704: Build: ( -- ) compile noop ;
1.42 ! pazsan 705: by: :dodefer ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
1.1 anton 706: Builder Defer
1.37 pazsan 707:
708: Build: ( inter comp -- ) swap T immediate A, A, H ;
709: DO: ( ghost -- ) ABORT" CROSS: Don't execute" ;DO
1.38 anton 710: Builder interpret/compile:
1.24 pazsan 711:
712: \ Sturctures 23feb95py
713:
714: >CROSS
715: : nalign ( addr1 n -- addr2 )
716: \ addr2 is the aligned version of addr1 wrt the alignment size n
717: 1- tuck + swap invert and ;
718: >TARGET
719:
720: Build: >r rot r@ nalign dup T , H ( align1 size offset )
721: + swap r> nalign ;
1.42 ! pazsan 722: by: :dofield T @ H + ;DO
1.24 pazsan 723: Builder Field
724:
725: : struct T 0 1 chars H ;
726: : end-struct T 2Constant H ;
727:
728: : cells: ( n -- size align )
729: T cells 1 cells H ;
730:
731: \ ' 2Constant Alias2 end-struct
732: \ 0 1 T Chars H 2Constant struct
1.1 anton 733:
734: \ structural conditionals 17dec92py
735:
736: >CROSS
737: : ?struc ( flag -- ) ABORT" CROSS: unstructured " ;
738: : sys? ( sys -- sys ) dup 0= ?struc ;
739: : >mark ( -- sys ) T here 0 , H ;
740: : >resolve ( sys -- ) T here over - swap ! H ;
741: : <resolve ( sys -- ) T here - , H ;
742: >TARGET
743:
744: \ Structural Conditionals 12dec92py
745:
746: Cond: BUT restrict? sys? swap ;Cond
747: Cond: YET restrict? sys? dup ;Cond
748:
749: >CROSS
750: Variable tleavings
751: >TARGET
752:
753: Cond: DONE ( addr -- ) restrict? tleavings @
754: BEGIN 2dup u> 0= WHILE dup T @ H swap >resolve REPEAT
755: tleavings ! drop ;Cond
756:
757: >CROSS
758: : (leave T here H tleavings @ T , H tleavings ! ;
759: >TARGET
760:
761: Cond: LEAVE restrict? compile branch (leave ;Cond
762: Cond: ?LEAVE restrict? compile 0= compile ?branch (leave ;Cond
763:
764: \ Structural Conditionals 12dec92py
765:
766: Cond: AHEAD restrict? compile branch >mark ;Cond
767: Cond: IF restrict? compile ?branch >mark ;Cond
768: Cond: THEN restrict? sys? dup T @ H ?struc >resolve ;Cond
769: Cond: ELSE restrict? sys? compile AHEAD swap compile THEN ;Cond
770:
771: Cond: BEGIN restrict? T here H ;Cond
772: Cond: WHILE restrict? sys? compile IF swap ;Cond
773: Cond: AGAIN restrict? sys? compile branch <resolve ;Cond
774: Cond: UNTIL restrict? sys? compile ?branch <resolve ;Cond
775: Cond: REPEAT restrict? over 0= ?struc compile AGAIN compile THEN ;Cond
776:
777: \ Structural Conditionals 12dec92py
778:
779: Cond: DO restrict? compile (do) T here H ;Cond
780: Cond: ?DO restrict? compile (?do) (leave T here H ;Cond
781: Cond: FOR restrict? compile (for) T here H ;Cond
782:
783: >CROSS
784: : loop] dup <resolve cell - compile DONE compile unloop ;
785: >TARGET
786:
787: Cond: LOOP restrict? sys? compile (loop) loop] ;Cond
788: Cond: +LOOP restrict? sys? compile (+loop) loop] ;Cond
789: Cond: NEXT restrict? sys? compile (next) loop] ;Cond
790:
791: \ String words 23feb93py
792:
793: : ," [char] " parse string, T align H ;
794:
795: Cond: ." restrict? compile (.") T ," H ;Cond
796: Cond: S" restrict? compile (S") T ," H ;Cond
797: Cond: ABORT" restrict? compile (ABORT") T ," H ;Cond
798:
799: Cond: IS T ' >body H compile ALiteral compile ! ;Cond
800: : IS T ' >body ! H ;
1.9 pazsan 801: Cond: TO T ' >body H compile ALiteral compile ! ;Cond
802: : TO T ' >body ! H ;
1.1 anton 803:
804: \ LINKED ERR" ENV" 2ENV" 18may93jaw
805:
806: \ linked list primitive
807: : linked T here over @ A, swap ! H ;
808:
809: : err" s" ErrLink linked" evaluate T , H
810: [char] " parse string, T align H ;
811:
812: : env" [char] " parse s" EnvLink linked" evaluate
813: string, T align , H ;
814:
815: : 2env" [char] " parse s" EnvLink linked" evaluate
816: here >r string, T align , , H
817: r> dup T c@ H 80 and swap T c! H ;
818:
819: \ compile must be last 22feb93py
820:
821: Cond: compile ( -- ) restrict? \ name
1.13 pazsan 822: bl word gfind dup 0= ABORT" CROSS: Can't compile"
1.1 anton 823: 0> IF gexecute
824: ELSE dup >magic @ <imm> =
825: IF gexecute
826: ELSE compile (compile) gexecute THEN THEN ;Cond
827:
828: Cond: postpone ( -- ) restrict? \ name
1.13 pazsan 829: bl word gfind dup 0= ABORT" CROSS: Can't compile"
1.1 anton 830: 0> IF gexecute
831: ELSE dup >magic @ <imm> =
832: IF gexecute
833: ELSE compile (compile) gexecute THEN THEN ;Cond
834:
835: >MINIMAL
836: also minimal
837: \ Usefull words 13feb93py
838:
839: : KB 400 * ;
840:
841: \ define new [IFDEF] and [IFUNDEF] 20may93jaw
842:
1.13 pazsan 843: : there? bl word gfind IF >magic @ <fwd> <> ELSE drop false THEN ;
1.1 anton 844:
845: : [IFDEF] there? postpone [IF] ;
846: : [IFUNDEF] there? 0= postpone [IF] ;
847:
848: \ C: \- \+ Conditional Compiling 09jun93jaw
849:
850: : C: >in @ there? 0=
851: IF >in ! T : H
852: ELSE drop
853: BEGIN bl word dup c@
854: IF count comment? s" ;" compare 0= ?EXIT
855: ELSE refill 0= ABORT" CROSS: Out of Input while C:"
856: THEN
857: AGAIN
858: THEN ;
859:
860: also minimal
861:
862: : \- there? IF postpone \ THEN ;
863: : \+ there? 0= IF postpone \ THEN ;
864:
865: : [IF] postpone [IF] ;
866: : [THEN] postpone [THEN] ;
867: : [ELSE] postpone [ELSE] ;
868:
869: Cond: [IF] [IF] ;Cond
870: Cond: [IFDEF] [IFDEF] ;Cond
871: Cond: [IFUNDEF] [IFUNDEF] ;Cond
872: Cond: [THEN] [THEN] ;Cond
873: Cond: [ELSE] [ELSE] ;Cond
874:
875: \ save-cross 17mar93py
876:
877: \ i'm not interested in bigforth features this time 10may93jaw
878: \ [IFDEF] file
879: \ also file
880: \ [THEN]
881: \ included throw after create-file 11may93jaw
882:
1.12 anton 883: bigendian Constant bigendian
1.1 anton 884:
1.34 anton 885: Create magic s" Gforth10" here over allot swap move
1.26 pazsan 886:
1.35 anton 887: char 1 bigendian + cell + magic 7 + c!
1.26 pazsan 888:
1.34 anton 889: : save-cross ( "image-name" "binary-name" -- )
890: bl parse ." Saving to " 2dup type cr
1.1 anton 891: w/o bin create-file throw >r
1.34 anton 892: s" #! " r@ write-file throw
893: bl parse r@ write-file throw
894: s" -i" r@ write-file throw
895: #lf r@ emit-file throw
896: r@ dup file-position throw drop 8 mod 8 swap ( file-id limit index )
897: ?do
898: bl over emit-file throw
899: loop
900: drop
1.26 pazsan 901: magic 8 r@ write-file throw \ write magic
1.16 pazsan 902: image @ there r@ write-file throw \ write image
903: bit$ @ there 1- cell>bit rshift 1+
904: r@ write-file throw \ write tags
1.1 anton 905: r> close-file throw ;
906:
907: \ words that should be in minimal
908:
909: : + + ; : 1- 1- ;
910: : - - ; : 2* 2* ;
1.11 pazsan 911: : * * ; : / / ;
1.1 anton 912: : dup dup ; : over over ;
913: : swap swap ; : rot rot ;
1.19 pazsan 914: : drop drop ; : = = ;
1.13 pazsan 915: : lshift lshift ; : 2/ 2/ ;
1.19 pazsan 916: : . . ;
1.42 ! pazsan 917: \ cell constant cell
! 918:
! 919: mach-file count included
1.1 anton 920:
921: \ include bug5.fs
922: \ only forth also minimal definitions
923:
1.40 pazsan 924: : \ postpone \ ; immediate
925: : ( postpone ( ; immediate
1.1 anton 926: : include bl word count included ;
927: : .( [char] ) parse type ;
928: : cr cr ;
929:
930: : times 0 ?DO dup T c, H LOOP drop ; \ used for space table creation
931: only forth also minimal definitions
932:
933: \ cross-compiler words
934:
935: : decimal decimal ;
936: : hex hex ;
937:
1.3 pazsan 938: : tudp T tudp H ;
1.39 pazsan 939: : tup T tup H ;
940:
941: : doc-off false T to-doc H ! ;
942: : doc-on true T to-doc H ! ;
943:
944: minimal
1.1 anton 945:
946: \ for debugging...
947: : order order ;
948: : words words ;
949: : .s .s ;
950:
951: : bye bye ;
952:
953: \ turnkey direction
954: : H forth ; immediate
955: : T minimal ; immediate
956: : G ghosts ; immediate
957:
958: : turnkey 0 set-order also Target definitions
959: also Minimal also ;
960:
961: \ these ones are pefered:
962:
963: : lock turnkey ;
964: : unlock forth also cross ;
965:
966: unlock definitions also minimal
967: : lock lock ;
968: lock
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